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What is a “Warm Edge”?

At the edge bonds, a “gap” is created between the double glazing panes with the help of spacers. This creates a space filled with inert gas or air between the glass panes, a key factor for the insulating efficiency of the glazing. The spacers create a linear thermal bridge of considerable length within the window component. When metal profiles are used, thermal heat is more or less released into the atmosphere – along the entire transition area between glass and window frame.

This loss is not only reflected in a building’s energy balance, but also leads to a cooling of the inside surface temperature along the glass edge – i.e. the edge becomes cold. If the surface temperature sinks below the dew point temperature of the surrounding air, condensation will develop – a comfort and hygiene flaw which consumers frequently object to. Apart from the health risks posed to residents, long-term condensation can also cause damage to the window frame.

Energy saving
Lower heating costs through better insulation: the thermally improved spacer SGG SWISSPACER V excels with an optimised heat transfer resistance. The heat transmission coefficient is at least 0.1 W/m2K lower than that of conventional aluminium spacer bars. Reductions of up to 0.3 W/m2K can even be attained. The result: the high tech spacer bar SGG SWISSPACER V enables heating costs to be reduced by up to 5%. That’s easy on the wallet, and with reduced CO2 emissions, also on the environment.

Comfort

Due to the superior isolation characteristics of SGG SWISSPACER V, higher temperatures are maintained at the edges of glass panes – significantly reducing the risk of condensation forming. This, in turn, reduces the buildup of harmful mould and mildew on the window. Higher temperatures at the edge of the pane also mean less cold radiation, ensuring more comfort inside and a healthy indoor climate

Aesthetics

The high-quality plastic of SGG SWISSPACER in combination with a unique colour range means you can design each window and any façade to perfectly suit your tastes. The attractive look brings a velvety, matt finish, without any shiny metal effects.

Environmental protection

Lower heat requirements through better insulation – SGG SWISSPACER saves energy. This benefits the environment in several ways. Unneeded energy must not be extracted, transported, supplied and processed. This not only saves resources but also decreases the level of CO2 emissions in these areas. Moreover, by being 100% recyclable, SGG SWISSPACER benefits not only the environment in terms of production but also later, in terms of disposal.

Cost-effectiveness

SGG SWISSPACER is cost-effective in two ways. On the one hand, no investment (or only minor investments) is necessary for processing. On the other hand, the consumer’s pay-back time is only 5 years or so on average. With rising energy costs, this time period is reduced even further. Thus the use of SGG SWISSPACER represents a very sensible investment in terms of energy conservation, comfort, aesthetics and environmental protection.

Data sheet for "warm edge"